Investment Calculator
Calculate how your investments grow over time with compound interest and regular contributions. Enter your initial investment, monthly contribution, expected return rate, and time horizon to see projected growth. Visualize the power of compound interest with detailed yearly breakdowns.
Key Features
- ✓Compound interest calculation
- ✓Monthly and annual contribution options
- ✓Adjustable return rate and compounding frequency
- ✓Yearly growth breakdown table
- ✓Visual growth chart
- ✓Inflation-adjusted projections
How to Investment Calculator — Compound Growth
- 1
Enter initial investment
Input your starting investment amount.
- 2
Set contributions and return rate
Add monthly contributions and expected annual return.
- 3
View projections
See year-by-year growth with total contributions vs earnings.
Common Use Cases
- •Planning long-term investment strategies
- •Understanding how compound interest grows wealth
- •Comparing different contribution amounts and return scenarios
- •Setting realistic investment goals
Frequently Asked Questions
What return rate should I use?▼
The S&P 500 has historically averaged ~10% annually before inflation (~7% after). Use 7-10% for stock market investments, 4-5% for bonds, and 1-2% for savings accounts.
How does compounding frequency matter?▼
More frequent compounding (daily vs annually) earns slightly more interest. The difference is small for typical returns but compounds over long periods.